THE SYNTHESIS OF FLOWERING HORMONE 183 



With some effective compounds, we don't even suspect what is going 

 on, but we do have experiments to investigate whether timing or 

 hormone synthesis is being affected. 



Auxins do not seem to play a controlhng role in the process, but 

 they do have an effect. A number of other compounds simply stop 

 development of the floral bud, and perhaps they could be profitably 

 used in attacking the problems of the final chapter. 



